To provide a method for manufacturing continuous paper capable of cutting out the continuous paper by a required length by accurately cutting base paper at a predetermined position.

The method for manufacturing continuous paper R includes: an alternately folding process S2 in which long base paper is alternately folded a plurality of times at a predetermined interval along its short direction; and a cutting-out process S3 in which paper is cut out from the base paper by a predetermined length on the basis of a cutting mark 9 having a fold which is formed at a different position when viewed from a thickness direction by making a size between the folds F folded in the alternately folding process S2 and different from the adjacent size between the folds.